TABLE 2.

Final cell densities of cultures grown in glucose minimal medium with different nitrogen sources at 0.6 mM

Strain	Relevant genotype	OD600 of cultures grown with:
		NH4Cl	Adenine	Hypoxanthine	Uric acid	Allantoin
ECL1	E. coli wild type	0.22	0.26	NGa	NG	NG
KC2653	Wild type	0.23	0.86	0.81	0.86	0.98
JA-K10	hpxD	0.21	0.24	NG	0.88	0.95
JA-K12	hpxE	0.23	0.22	NG	0.89	0.89
JA-K14	hpxO	0.22	0.22	NG	NG	0.85
JA-K15	hpxP	0.25	0.83	0.90	0.83	0.81
JA-K16	hpxR	0.23	0.20	NG	0.86	0.80
KC2738	ntrC	NG	NG	NG	NDb	ND
KC5249	nac	0.20	0.90	0.86	ND	ND

^aNG, no growth.

^bND, not determined.